以上来源于: WordNet
N-COUNT The cardinal points are the four main points of the compass, north, south, east, and west. (罗盘上的四个)方位基点; 即东、西、南、北
This is the first cardinal point the practitioner should keep in mind.
这是第一个基本点的医生应该牢记。
In this paper, the calculating formulas are put forward from the definition of cardinal point.
从基点的定义给出厚透镜基点的计算公式。
The cardinal point and cardinal plane play an important role in the geometrical optics and are widely used in modern photography and video technology.
透镜组的基点、基面在几何光学中占有重要的地位，并在现代摄影、摄象技术中得到了广泛应用。
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